
(function($) {
    var defaults = {
    	image1: "",
    	image2: "",
    	displacement: "",
    	intensity: 1,
    	speedIn: 1.6,
    	speedOut: 1.2,
    	hover: true,
    	easing: "easeOut"
    };

    $.fn.imageHoverMaster = function(options) {
        var args = $.extend({}, defaults, options);

        var vertex = `
	        varying vec2 vUv;
	        void main() {
	          vUv = uv;
	          gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
	        }
	    `;

	    var fragment = `
	        varying vec2 vUv;

	        uniform sampler2D texture;
	        uniform sampler2D texture2;
	        uniform sampler2D disp;

	        // uniform float time;
	        // uniform float _rot;
	        uniform float dispFactor;
	        uniform float effectFactor;

	        // vec2 rotate(vec2 v, float a) {
	        //  float s = sin(a);
	        //  float c = cos(a);
	        //  mat2 m = mat2(c, -s, s, c);
	        //  return m * v;
	        // }

	        void main() {

	            vec2 uv = vUv;

	            // uv -= 0.5;
	            // vec2 rotUV = rotate(uv, _rot);
	            // uv += 0.5;

	            vec4 disp = texture2D(disp, uv);

	            vec2 distortedPosition = vec2(uv.x + dispFactor * (disp.r*effectFactor), uv.y);
	            vec2 distortedPosition2 = vec2(uv.x - (1.0 - dispFactor) * (disp.r*effectFactor), uv.y);

	            vec4 _texture = texture2D(texture, distortedPosition);
	            vec4 _texture2 = texture2D(texture2, distortedPosition2);

	            vec4 finalTexture = mix(_texture, _texture2, dispFactor);

	            gl_FragColor = finalTexture;
	            // gl_FragColor = disp;
	        }
	    `;

	    //var parent = opts.parent || console.warn("no parent");
	    var parent = this;
	    if (args.parent) parent = this.closest("." + args.parent)

	    var 
		width = parent.width(),
		height = parent.height();
	    var dispImage = args.displacement || console.warn("displacement image missing");
	    var image1 = args.image1 || console.warn("first image missing");
	    var image2 = args.image2 || console.warn("second image missing");
	    var intensity = args.intensity || 1;
	    var speedIn = args.speedIn || 1.6;
	    var speedOut = args.speedOut || 1.2;
	    var userHover = (args.hover === undefined) ? true : args.hover;
	    var easing = args.easing || Expo.easeOut;

	    var mobileAndTabletcheck = function() {
	    var check = false;
	      (function(a){if(/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino|android|ipad|playbook|silk/i.test(a)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0,4))) check = true;})(navigator.userAgent||navigator.vendor||window.opera);
	      return check;
	    };

	    var scene = new THREE.Scene();
	    var camera = new THREE.OrthographicCamera(
	        width / -2,
	        width / 2,
	        height / 2,
	        height / -2,
	        1,
	        1000
	    );

	    camera.position.z = 1;

	    var renderer = new THREE.WebGLRenderer({
	        antialias: false,
	    });

	    renderer.setPixelRatio(window.devicePixelRatio);
	    renderer.setClearColor(0xffffff, 0.0);
	    renderer.setSize(width, height);
	    parent.append(renderer.domElement);

	    var loader = new THREE.TextureLoader();
	    loader.crossOrigin = "";
	    var texture1 = loader.load(image1);
	    var texture2 = loader.load(image2);

	    var disp = loader.load(dispImage);
	    disp.wrapS = disp.wrapT = THREE.RepeatWrapping;

	    texture1.magFilter = texture2.magFilter = THREE.LinearFilter;
	    texture1.minFilter = texture2.minFilter = THREE.LinearFilter;

	    texture1.anisotropy = renderer.getMaxAnisotropy();
	    texture2.anisotropy = renderer.getMaxAnisotropy();

	    var mat = new THREE.ShaderMaterial({
	        uniforms: {
	            effectFactor: { type: "f", value: intensity },
	            dispFactor: { type: "f", value: 0.0 },
	            texture: { type: "t", value: texture1 },
	            texture2: { type: "t", value: texture2 },
	            disp: { type: "t", value: disp }
	        },

	        vertexShader: vertex,
	        fragmentShader: fragment,
	        transparent: true,
	        opacity: 1.0
	    });

	    var geometry = new THREE.PlaneBufferGeometry( width, height, 1 );
	    var object = new THREE.Mesh(geometry, mat);
	    scene.add(object);

	    var addEvents = function(){
	        var evtIn = "mouseenter";
	        var evtOut = "mouseleave";
	        if (mobileAndTabletcheck()) {
	            evtIn = "touchstart";
	            evtOut = "touchend";
	        }
	        $(parent).on(evtIn, function() {
	            TweenMax.to(mat.uniforms.dispFactor, speedIn, {
	                value: 1,
	                ease: easing
	            });
	        });

	        $(parent).on(evtOut, function() {
	            TweenMax.to(mat.uniforms.dispFactor, speedOut, {
	                value: 0,
	                ease: easing
	            });
	        });
	    };

	    if (userHover) {
	        addEvents();
	    }

	    window.addEventListener("resize", function(e) {
	        renderer.setSize(width, height);
	    });


	    this.next = function(){
	        TweenMax.to(mat.uniforms.dispFactor, speedIn, {
	            value: 1,
	            ease: easing
	        });
	    }

	    this.previous = function(){
	        TweenMax.to(mat.uniforms.dispFactor, speedOut, {
	            value: 0,
	            ease: easing
	        });
	    };

	    var animate = function() {
	        requestAnimationFrame(animate);

	        renderer.render(scene, camera);
	    };
	    animate();

    };
})(jQuery);